Yes, Android L can be installed on the Nexus 4 and first-gen Nexus 7

[Wireless News]

http://l1.yimg.com/bt/api/res/1.2/tJd5.ZpiX0tKjJwqCYaagQ--/YXBwaWQ9eW5ld3M7Zmk9ZmlsbDtoPTg2O3E9NzU7dz0xMzA-/http://media.zenfs.com/en_US/News/BGR_News/android-l-1.jpg (http://news.yahoo.com/yes-android-l-installed-nexus-4-first-gen-202915150.html)Google at I/O 2014 released a preview of Android L, its next major Android operating system version that brings a complete design makeover and a slew of new features. But the company only posted the Nexus 5 and Nexus 7 (2013)-Android L builds, leaving Android fans who own other Nexus devices waiting for official Android L ROMs that could be installed on the Nexus 4 smartphone or the older Nexus 7 (2012) and Nexus 10 tablets. While Google is yet to release the official Android L Developer Preview for older Nexus devices, developers have already put the Android L SDK and Android L source code to good use to come up with their own Android L ports for the Nexus



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